DE60225799T2 - POCKET MANUFACTURING AND PACKING MACHINE - Google Patents

Description

Field of the invention

The The invention relates to a film drawing apparatus and an apparatus for manufacturing and packing a bag, having the sheet drawing apparatus.

Background information

traditionally, uses a device for Making and packing a bag, the objects fills and packs while makes bags, as packaging material, a film roll on which a long film wrapped around a roll core.

A Film is pulled out when a motor turns a support shaft that holds the film roll supports. The Foil then becomes a section for making and packaging a Carried bag. So soon the foil wrapped around the roll core of the roll of film, is pulled out to the end, the film is at a Folienfügeabschnitt separated with a knife, which provided at a position is, which is a predetermined distance away from the film roll is.

Then the empty roll of film is replaced by a new roll of film. Subsequently becomes a predetermined length pulled out of the new film roll on film.

The in a film-laying section remaining end of the separated film and the starting piece of the The new film roll pulled out film are by using an adhesive tape connected. Alternatively, the end of the separated Foil and the beginning piece the film of the new film roll are connected by a heat connection.

On this way you can the film end remaining in the film-laying section, and the film being pulled out of a new roll of film, connected to each other and to the section for manufacturing and packaging a bag to get promoted.

However, because the film-laying section and the installation position of the film roll are separated from each other, becomes the portion of the film between the roll core and the film-laying section discarded when the film is separated at the film bonding portion becomes.

The Length of the unused portion of the film varies depending on the size of the bags. Usually such an unused portion is of the order of magnitude from three to five Bags. The accumulated amount of such unused sections provides a big Amount of waste. Furthermore, since such unused sections be discarded, they also cause an increase in the amount of waste, which needs to be eliminated.

Of Further, if the film rolled up on a roll of film, Completely is completed, it is necessary to operate the device for manufacturing and packing a bag to stop. In this case, even if releasing items from the article feed section at the same time is stopped, reach objects that have been released, the section for making and packing a First bag, when a predetermined period of time has passed. That's why it is Device for Making and packing a bag already stopped when they read the section on manufacturing and packaging a bag and, consequently, these can objects not packaged. As a result, such packages wasted.

The JP 2163253 discloses a device in accordance with the preamble of claim 1 and describes a connection device for connecting a subsequent end of a first ply to a leading end of a second ply comprising a first servomechanism having a first drive for gripping and advancing the first ply in a forward direction; a second servomechanism having a second drive for engaging the first layer upstream of the first drive; a connecting device for connecting the succeeding and the previous ends to each other upstream of the second drive; a sensor for generating a signal when the trailing end of the first layer passes a predetermined position upstream of the connector; and a computer connected to the first and second servomechanisms, the connection device and the sensor for reducing the forward movement speed of the first layer and subsequently for effecting a connection operation of the connection device in receiving the signal from the sensor; and a ply length compensating device that grips the ply at a first position between the first and second drives to reduce or increase the length of the first ply between the first and second drives as the speed changes between the first and second drives ,

Disclosure of the invention

One purpose of the invention is to provide a bag-making and packaging apparatus that can safely pack articles discharged from a subject feeding section even if the film can no longer be unwound from the roll of film.

The Device for Making and packing a bag in accordance in one aspect of the invention is an apparatus for manufacturing and packing a bag, the objects packs while it's a bag made of a film roll, in which a long film in a Roll form is wound up. The device for manufacturing and packaging a bag has a section for making and packing a bag for manufacturing of bags, while objects are packaged, an article feeding section for feeding the objects to the sections for making and packing a bag, a Film roll support section for supporting the film roll, a drive device for sending the film from the film roll passing through the film roll support section supported is a film transport mechanism to carry the film that is from the film roll to the manufacturing section and packing a bag is sent, a slide storage mechanism for sending a slide while storing the film which is conveyed by the film conveying mechanism, a detecting device for detecting that the film of a film roll is used up to an end, and a control section for Stopping activities of the item delivery section and the drive device in response to an output from the Detecting device and for stopping an operation of the section for making and packaging a bag after being stored in the film storage mechanism Stored film is sent in an amount that a predetermined Number of bags equivalent.

at the device for producing and packaging a bag according to the invention, the film from the film roll to pass through the film conveying mechanism to the section for making and packing a bag become. At this time, the slide is sent while a Section of the film stored in the film storage mechanism becomes. Furthermore, every time the item supply section grabs the Section for manufacturing and packaging a bag of articles, the section for manufacturing and packing a bag the objects off.

Then the film of the film roll is used entirely. In response, the control section stops the operation of the item supply section and the drive device.

At However, there are some items that are at this point promoted between the item supply section and the section for Making and packing a bag. Thus, the bag-making and packaging section unpacks the items which carries by using the film in the film storage mechanism is kept. In this way, even if the film roll the Can not send a film the promoted objects Packed by the section for making and packing a bag become.

Then, once packing for these objects accomplished and the packing is finished, the control section stops the Operation of the section for making and packing a bag.

On this way it is possible things, the section for making and packing a bag from the items supply supplied are stopped even if the object supply section is stopped Use the stored in the slide storage mechanism Unpack the foil.

The Detecting device may include a tension detecting device have, which detects a tensile force of the film. The control section can the operation of the item supply section and the drive device stop when the output from the tension detecting device a exceeds predetermined value.

With this structure, since the tension of the film always the predetermined Value exceeds, if the film of the film roll is used up, it is possible the Operation of the item delivery section and the drive device to stop.

Of the Control section controls the drive device such that the Traction of the film is constant when the output from the tension detecting device is less than the predetermined value.

With This structure allows the tensile force of the film during normal operation based on the output from the tension detecting device maintained at a constant level.

Preferably should be the length the film stored in the film storage section the foil length which is required to unpack the items belonging to the section for manufacturing and packaging a bag from the article supply section already fed when the operation of the item supply section is stopped.

Consequently, it is possible to safely pack the items corresponding to the item for making and packing a bag from the item leading portion to be supplied when the operation of the article feed section is stopped.

Of the Foil storage mechanism has a fixed roller for guiding the transported Foil, a movable roll for changing a running track of the transported Slide and a movement mechanism that the moving roller too the attached role back and forth.

With this structure, as the moving role based on the tensile force the film moves relative to the fixed roller, it is possible to To send film to the section for making and packing a bag, while adjusted the pulling force of the film while maintaining a reasonable amount the foil is stored.

Also, if the item supply section is stopped, the moving mechanism moves the movable roller relative to the mounted roller such that the in the film storage mechanism Stored foil to the section for making and packing a Sent a bag can be. At the time of replacing a roll of film can the severed end of the film on the film storage mechanism, not longer kept so much film, are guided so that the film storage section more Can store foil. In this way, the film storage mechanism feed the foil, after the item supply section is stopped is and store the film in the film storage section, when the film is replaced.

The Device for Making and packing a bag may further include a film joining device between the film roll supporting portion and the film conveying mechanism is arranged, wherein the film joining device at the time of Replacing the film roll one end of the film on the film conveying mechanism side and adds a beginning of a replaced roll of film. Of the Foil storage mechanism may be on a downstream side a slide joining position of Film joining device be arranged.

In in this case, at the time of replacing the film roll, after the film sent from the film roll before replacement is separated at a portion near the film roll, the end the severed film toward the film storage mechanism drawn.

On this way, the severed end of the film on the Folienfügevorrichtung guided become. That's why the end of the film roll on the film conveying mechanism side and the beginning of the film of the exchanged film roll in the film joining device get connected.

consequently Is it possible, Use the foil to the end and waste the foil to reduce. Also, given the foil, which is considered a waste piece is, eliminated, can reduce the amount of garbage be reduced. Consequently, you can reduces the cost of producing and packaging a bag become.

Of Further can things, the section for making and packing a bag from the items supply supplied when the item supply section is stopped is to be packaged by using the film that is in the provided on the film joining device Foil storage mechanism is stored.

Of the Foil storage mechanism may have a fixed roller for guiding the transported Foil, a movable roll for changing a running track of the transported Foil and a movement mechanism, which has the moving role in the vicinity and moved away from the attached roller.

Consequently, since the movable roller based on the tensile force of the film moved relative to the fixed roller, it is possible to To send film to the section for making and packing a bag, while at the same time set the traction of the film and a reasonable Amount of foil is stored.

If the item delivery section is stopped, the moving mechanism moves the movable roller relative to the mounted roller such that the in the film storage mechanism Stored foil to the section for making and packing a Sent a bag can be. Furthermore, at the time of exchanging the Film roll the severed end of the film to the film storage mechanism be drawn. In this way, the film storage mechanism send the film after the article feed section has stopped, and he can keep the film at the time of film replacement.

Of the movable frame may have at least one movable roller. The movable frame may have at least one fixed roller. The movable roller and the fixed roller may be alternately in the sheet conveying direction be arranged.

With this structure, when the article feeding section is stopped, the moving mechanism moves the movable roller relative to the be fixed roll such that the stored in the film storage mechanism film can be sent to the section for producing and packaging a bag. Furthermore, at the time of replacing the film roll, the severed end of the film may be drawn toward the film storage mechanism. In this way, the film storage mechanism can send out the film after the article supply section is stopped, and store the film at the time of film replacement.

Of the Movement mechanism may have a fixed frame for supporting both Ends of the fixed roller, a movable frame for supporting both Ends of the movable roller and have a rotation axis parallel supported to the mounted roller is to support one end of the movable frame such that the movable frame is rotatable about the fixed frame.

The moving roller moves relative to the fixed roller the movable frame is allowed to move about the axis of rotation to rotate relative to the fixed frame.

With this construction, when the article supply section is stopped, the movable frame moves about the axis of rotation away from it Frame and towards this. Consequently, it is possible that in the film storage mechanism Stored foil to the section for making and packing a Bag too send. Also pivots at the time of replacing the roll of film the movable frame about the axis of rotation relative to the fixed Frame. Thus, the severed end of the film may become the film storage mechanism be drawn.

The Film joining device may further comprise a film base holding mechanism which is in the film conveying direction on the upstream Side of the film storage mechanism is arranged. The foil tray holding mechanism holds on Aspirate the film at the time of film joining from the replaced one Film roll is separated.

In In this case, the end of the film can be held by suction through the film base holding mechanism be in the direction of film transport on the upstream Side of the film storage mechanism is arranged. At the same time the severed end of the film in the film storage mechanism be kept.

On this way it is possible to maintain the position of the separated film and the end of the film on the foil joining device respectively. Consequently, it is possible the end of the foil with the beginning of the replacement film roll lightly to connect without the end of the film is left loose.

Of the Control section can the Folienfaughaltemechanismus during the Activate the slide joining process. Consequently, it is possible misalignment of the films at the time of film bonding safe to prevent.

The joining device has a film holding mechanism which is in the film conveying direction on a downstream Side of the film storage mechanism is arranged, wherein the film holding mechanism for holding a sheet on the sheet conveying mechanism side the time of a joining the slides is.

With this structure it is possible the stored in the film storage mechanism film the Section for making a bag supply, without imposing a tensile stress on the film roll. Consequently Is it possible, to prevent a crack of the film due to the tensile stress, which is imposed on the film roll.

Of the Control section can the film retaining mechanism in response Press on an output of the detection device. Consequently, it is possible to have one To prevent cracking of the film due to the tensile stress which is imposed on the film roll.

As as discussed above, it is with the present invention possible, objects To unpack, the section to manufacture and pack a bag from the items supply supplied when the item supply section stopped by using the slide stored in the slide storage mechanism becomes. Therefore there is no waste of objects.

BRIEF DESCRIPTION OF THE DRAWINGS

1 Fig. 11 is a schematic side view showing an apparatus for manufacturing and packaging a bag in accordance with the first embodiment of the invention.

2 is a schematic rear view showing the structure of the apparatus for manufacturing and packaging a bag of 1 viewed from the side of the film roll section.

3 is a schematic plan view showing the structure of the apparatus for manufacturing and packaging a bag of 1 viewed from above.

4 is a schematic perspective View showing the schematic transport path of the film, which in 1 is shown.

5 FIG. 16 is a perspective view showing the structure of the bag-making and packaging section of FIG 1 shows.

6 FIG. 12 is a schematic side view illustrating the detailed structure of the film roll portion of the bag manufacturing and packaging apparatus of FIG 3 shows.

7 Fig. 12 is a schematic cross-sectional view showing the first operation of replacing a roll of film.

8th Fig. 12 is a schematic cross-sectional view showing the second process of replacing a film roll.

9 Fig. 12 is a schematic cross-sectional view showing the third process of replacing a roll of film.

10 Fig. 12 is a schematic cross-sectional view showing the fourth process of replacing a roll of film.

11 Fig. 12 is a schematic cross-sectional view showing the fifth process of replacing a roll of film.

12 is an enlarged view of section X in FIG 10 ,

13 Fig. 12 is a schematic view showing the structure of the film storage mechanism in accordance with another embodiment of the invention.

14 Fig. 12 is a schematic view showing the structure of the film storage mechanism in accordance with still another example of the invention.

15 Fig. 12 is a schematic view showing the structure of the film storage mechanism in accordance with still another embodiment of the invention.

16 Fig. 10 is a block diagram showing the control of the bag-manufacturing and packaging section in accordance with the embodiment of the invention.

17 Fig. 10 is a flowchart showing the operation of the control device using the film stored in the dancer roller to unpack the articles at the time of replacing a roll of film.

18 Fig. 10 is a flow chart showing the operation of the control device in which the film stored in the dancer roller is used for packaging at the time of replacing the film roll.

19 Figure 3 is a schematic view of the operation of the dancer roll during normal operation and at the time of replacing a roll of film.

20 Fig. 10 is a flowchart of the operation of the control apparatus in which the film stored in the film storage mechanism of the film joining apparatus is used to unpack the items at the time of film roll exchange.

21 Fig. 10 is a flowchart of the operation of the control apparatus in which the film stored in the film storage mechanism of the film joining apparatus is used to unwrap the items at the time of film roll exchange.

22 Fig. 12 is a schematic cross-sectional view of the operation of the film storage mechanism of the film joining apparatus at the time of normal operation and film roll exchange.

23 Fig. 12 is a schematic cross-sectional view of the operation of the film storage mechanism of the film joining apparatus at the time of normal operation and film roll exchange.

24 Figure 11 is a schematic cross-sectional view of the operation of the film storage mechanism of the film joining apparatus during normal operation and at the time of film roll exchange.

25 Figure 11 is a schematic cross-sectional view of the operation of the film storage mechanism of the film joining apparatus during a normal operation and at the time of replacing the film roll.

26 Figure 11 is a schematic cross-sectional view of the operation of the film storage mechanism of the film joining apparatus during normal operation and at the time of film roll exchange.

DETAILED DESCRIPTION ONE EMBODIMENT

1 Fig. 12 is a schematic side view showing the structure of a bag manufacturing and packaging apparatus in accordance with a first embodiment of the invention. 2 is a schematic rear view showing the structure of the apparatus for manufacturing and packaging a bag of 1 as viewed from the side of the film roll section. 3 is a schematic plan view showing the structure of the apparatus for manufacturing and packaging a bag of 1 viewed from above. 4 Fig. 12 is a schematic perspective view showing a conveying path of the film 2 shows.

In 1 has a device 1000 for producing and packing a bag, a film roll section 100 , a film conveying section and a section 300 for making and packing a bag.

As it is in 3 is shown, the film roll section 100 a film roll support section 101 and a film joining device 102 , The film roll support section 101 has a support shaft 3 , a disc-shaped roller stop 4 and a motor 6 ,

The support shaft 3 is at a rear section of the device 1000 for making and packing a bag by a support mechanism 50 who in 2 is shown supported such that the support shaft 3 is pivotable between directions parallel to and perpendicular to a mounting surface E of the device 1000 for making and packing a bag. The roll stop 4 is at an end portion of the support shaft 3 closer to the support mechanism 50 is so fastened that the roller stop 4 perpendicular to the support shaft 3 is.

The support shaft 3 is transmitted via a timing belt (not shown in the figures) by the engine 6 rotatably driven. The support mechanism 50 has stops (not shown in the figures), the support shaft 3 in the parallel and rectangular directions as described above.

To a roll of film 1 must attach the support shaft 3 in the roll core 31 the film roll 1 be introduced while the support shaft 3 parallel to the mounting surface E of the device 1000 is positioned for making and packing a bag. The film roll 1 must be pressed in until an end surface of the film roll 1 the roll stop 4 touched. Then, a locking operation causes the stops 5 from the peripheral surface of the shaft 3 so protrude that the roll core 31 the film roll with these stops 5 engaged. In this way, the film roll 1 on the support shaft 3 attached.

Then the support shaft 3 turned in the direction of an arrow A. The support shaft 3 and the roll of film 1 are fastened in a position where the support shaft 3 perpendicular to the mounting surface E of the device 1000 for making and packing a bag. At this time is the roll stop 4 parallel to the mounting surface E and is the film roll 1 through the roller stop 4 supported.

During the manufacturing and packaging operation of a bag, the film 2 from the roll of film 1 pulled out when the engine 6 the support shaft 3 and the roll stop 4 rotates.

The from the film roll support section 101 pulled out film 2 is through the in 3 shown Folienfügevorrichtung transported to the film conveying section.

As it is in the 2 and 3 is apparent, the film conveying portion has a first guide roller 7 , a second leader 8th , a turning staff 9 , a reversible up-down mechanism 10 , a variety of roll bars 11 and a dancer role 12 , The first leadership role 7 and the second leadership role 8th are arranged vertically while the variety of roll bars 11 and the dancer role 12 are arranged horizontally. The turning staff 9 is arranged so that he is the first leader 7 and the second leadership role 8th cuts at a 45 ° angle.

If the slide 2 through the section 300 for manufacturing and packaging a bag, which will be described later, the inner surface of the film must 2 point upwards, as the film 2 is formed into a tube shape to fill objects in there. That's why the film needs 2 which is wound with its outer surface outside, carried by the apparatus for manufacturing and packaging a bag with its inner surface facing upward.

This reversal of the film is achieved by passing the film through the first and second guide rollers 7 and 8th and the turning staff 9 causes.

As it is in 4 it can be seen, the film is 2 at the second leadership role 8th Curved after getting the first leadership 7 happened. This will change the direction of conveyance of the film 2 rotated by 180 °, giving the film 2 to the turning staff 9 leads. The foil 2 becomes at the turning bar 9 further curved. This changes the conveying direction of the film 2 by 90 ° and turns the film 2 around. In this way, the film becomes 2 conveyed upward, wherein the width direction is horizontal. After that, as it is in 3 shown is the film 2 in the section 300 for making and packing a bag with its inner surface facing upward.

The turning staff 9 is through the reversing bar up-down mechanism 10 who in 2 shown is moving up and down Lich, as can be seen by an arrow B. By the turning bar 9 is moved up and down, it is possible, the width direction position of the film 2 adjust. If, for example, the width of the film 2 changes, the slide needs 2 that in the section 300 for conveying and packing a bag, are conveyed so that the width direction middle section coincides with the middle section of a hopper 22 is aligned. The funnel 22 will be described later. At the device 1000 for manufacturing and packaging a bag, since the height direction position of the lower end surface of the film roll 1 from which the film 2 is stationary, the film becomes 2 centered by the turning bar 9 is moved up or down.

The in the 1 and 3 shown dancer role 12 captures the tension of the film 2 in the following way. The foil 2 is always by a pull-down belt 19 of the section 300 for producing and packaging a bag at a controlled rate, which will be described below.

When the tension of the film 2 The position of the dancer roll shifts 12 which is pushed down from a reference position up and down. The dancer roll 12 is coupled to a load cell, which via a tension spring with the frame of the Folienbeförderungsabschnitts 200 is attached. This load cell detects the offset of the dancer roll 12 from the reference position, in other words, the tension of the film 2 , based on the tensile force of the spring. The engine described above 6 who is the foil 2 unwinding is controlled based on the detected tensile force. In other words, when the pulling force is large, the rotational speed of the motor decreases 6 to. When the pulling force is small, the engine speed decreases 6 from. In this way, a regulation is performed to the dancer roll 12 to hold at the reference position.

The foil 2 that through the dancer roll 12 is kicked through a variety of roll bars 11 which extend horizontally, guided horizontally. As it is in 3 shown is the film 2 in the direction of an arrow C on the upper section of the device 1000 for making and packing a bag up to the section 300 for making and packing a bag, with the inside surface (the area that will be on an inside of the bag) being at the top.

5 FIG. 15 is a perspective view illustrating the detailed structure of the present invention. FIG 1 shown section for manufacturing and packaging a bag shows.

In 5 has the section 300 for producing and packaging a bag, a molding device 15 , a pipe 16 , a longitudinal sealing mechanism 18 , a pair of pull-down straps 19 , a transverse sealing mechanism 20 and a funnel 22 , At the section 300 for making and packing a bag is the film 2 by passing through a gap between the former 15 and the tube 16 shaped into a tubular shape. The tubular shaped foil 2 gets through the pull-down straps 19 between the tube 16 and the pair of pull-down straps 19 while maintaining the tubular shape. In the meantime, overlapping margins 17 the foil 2 through the longitudinal sealing mechanism 18 sealed in the longitudinal direction.

Further, from a projecting article supply section (not shown in the figures) to the hopper 22 supplied items through the interior of the tube 16 and are in the slide 2 introduced, which is formed in the tubular shape. The foil 2 with the articles filled therein is by the transverse sealing mechanism 20 sealed in the transverse direction and separated. A bag 21 with objects filled therein is thus produced.

6 FIG. 11 is a side view showing a detailed structure of the sheet drawing apparatus in the bag manufacturing and packaging apparatus shown in FIG 3 is shown. The 7 - 11 are schematic cross-sectional views showing the processes 1 to 5 show that are performed by the film-drawing device at the time of a film roll exchange. 12 is an enlarged view of a section X in FIG 10 ,

Furthermore, the 13 - 14 Structural views showing structures of the film storage mechanism in accordance with other embodiments of the invention.

As it is in the 6 and 7 has shown the foil joining device 102 a film holding mechanism 60 which holds the films and, when the films are joined, fixes a film suction mechanism 70 who is the foil 2 by suction, and a film storage mechanism 80 ,

The foil storage mechanism 80 has three fixed wheels 25 , two moving wheels 26 , a pair of attached frames 27 , a pair of movable frames 28 , a rotation axis 29 , and a leadership role 30 , The three fixed rollers 25 that have two moving wheels 26 , the rotation axis 29 and the leadership 30 are arranged vertically so that they are perpendicular to the transport direction of the film 2 are. The three fixed rollers 25 , the moving wheels 26 , the rotation axis 29 and the leadership 30 are also arranged so that they pa are parallel to each other. The pair fastened frames 27 is at a predetermined gap therebetween and parallel to the direction of conveyance of the film 2 arranged. The pair of fastened frames 27 is on the main frame 600 attached.

The pair of moving frames 28 is disposed with a predetermined gap therebetween and is parallel to the conveying direction of the film 2 arranged. The pair of moving frames 28 is through the axis of rotation 29 supported to pivot about the axis of rotation 29 frame attached relative to the pair 27 to be.

Both ends of the three fixed rollers 25 and the leadership 30 are frames fixed axially through the pair 27 supported so that each of the three fixed rollers 25 and the leadership 30 is rotatable. Both ends of the two moving rollers 26 are moving frames on the pair 28 mounted so that each of the moving rollers 26 relative to the moving frame 28 is rotatable. Also, the two moving rollers 26 around the axis of rotation 29 synchronous with the movement of the pair of movable frames 28 rotatably.

The foil 2 is through the axis of rotation 29 guided, passes through the film suction mechanism 70 and continues through the outer surface of the first fastened roller 25 , the inner surface of the first movable roller 26 , the outer surface of the second attached roller 25 and the inner surface of the second movable roller 26 guided. Then, the conveying direction of the film becomes 2 through the outer surface of the third fixed roller 25 changed. Subsequently, the film 2 led to the film conveying section.

The processes in which the film 2 from the roll of film 1 is pulled out to the end, the film roll 1 is exchanged, and the film 2 will be added to a new, with reference to the 7 - 12 explained. In the 8th - 12 will the film 2 the old film roll 1 before replacing as a foil 2a denotes while the film of the film roll 1 after replacing it as a foil 2 B is called to distinguish them from each other.

At the time of making and packing a bag, as in 7 it can be seen, the film occurs 2 that from the film roll 1 in the direction of an arrow Y, through the fixed rollers 25 and the moving rollers 26 the film storage mechanism 80 the foil joining device 102 and is conveyed to the sheet conveying section. At this time, the film storage mechanism 60 and the film suction mechanism 70 not activated.

As it is in 8th shown is the film 2a through the film holding mechanism 60 firmly on the film joining device 102 held once the slide 2a the foil 1 pulled out to the end. In the meantime, the film suction mechanism stops 70 the foil 2a by suction. Furthermore, the film 2a separated at the end, as shown at an arrow D. In this way, the film 2a and the roll core 31 the film roll 1 separated.

Next, as it is in 9 As can be seen, the pair becomes movable frames 28 , along with the moving rollers 26 , in the direction of an arrow F relative to the pair of fixed frames 27 the film storage mechanism 80 pivoted. In this way, the two moving rollers 26 from the three fixed rollers 25 separated. At this time the film will be 2a held firmly by the film holding mechanism. Therefore, when the two moving rollers 26 move, becomes a section of the slide 2a that does not fit in the film holding mechanism 60 occurred in the film joining device 102 drawn. As a result, the severed end of the film becomes 2a to the film suction mechanism 70 be led.

In this case, because the film holding mechanism 60 the foil 2a holds tight, the foil becomes 2a not in the direction of transport of the film 2a to the film conveying section. Therefore, if the carriage of the film 2a is resumed, the film can 2a be transported gently.

Also, because of the suction mechanism 70 the entire width of the film 2a by sucking, the meandering of the film can be prevented when the film storage mechanism 80 the foil 2a draws. Instead, the film can be pulled in while maintaining the tension of the film. Therefore, it is possible to prevent the end of the film 2a within the film storage mechanism 80 jammed.

Subsequently, the in 1 shown support shaft 3 in the direction parallel to the mounting surface E of the device 1000 rotated to make and pack a bag. The attacks 5 that with the roll core 31 the film roll 1 are engaged, are disengaged. Then the roll core becomes 31 from the support shaft 3 decreased.

Furthermore, the new film roll 1 to the support shaft 3 coupled. The roll core 31 the new film roll 1 will with the stops 5 engaged, causing the roll core 31 with the support shaft 3 is engaged. The support shaft 3 gets into the mounting surface E of the device 1000 rotated to manufacture and packaging a bag and fixed in the direction perpendicular to this.

As it is in the 10 and 12 shown after the new roll of film 1 is brought into the upright position, the beginning piece of the film 2 B That's about the new roll of film 1 is wound, pulled out until the initial piece the film suction mechanism 70 reached. The beginning piece of the film 2 B comes with the end of the slide 2a overlaps, by suction through the film suction mechanism 70 is held. The beginning piece of the film 2 B and the end of the slide 2a be through a tape 24 connected as it is in 12 is shown. Subsequently, as it is in 11 is shown, the film holding mechanism 60 and the film suction mechanism 70 disabled.

After the slide 2a and the foil 2 B thus connected, the support shaft 3 and the roll stops 4 again through the engine 6 turned. The film is pulled out in the direction of the arrow Y. In this way, the manufacture and packaging of a bag is resumed. At this time the film will be 2 B transported with the foil 2a connected is. The pair of moving frames 28 gets along with the moving rollers 26 in the direction of an arrow G due to the tension of the film 2 B passing through the slide 2a is pulled.

As described above, the end of the film 2a to the film suction mechanism 70 at the time of replacing a roll of film 1 be pulled up while the slide 2a the replaced film roll 1 through the film holding mechanism 60 and through the film suction mechanism 70 is held by suction.

In this way, the end of the film 2a through the film suction mechanism 70 is held by suction, and the beginning piece of the film 2 B the replacement film roll 1 easily through the tape 24 get connected.

As a result, the film can 2a the foil 1 be used before an exchange until the end. Therefore, wasting slides can be prevented. Also, since there will be no film that is discarded as scrap, the amount of waste can be reduced.

Furthermore, since the end of the film 2a and the beginning piece of the film 2 B can be connected while the slide 2a through the film holding mechanism 60 and the film suction mechanism 70 held firmly, the film can 2a and the foil 2 B be easily and safely connected, without causing a loosening of the films.

In the embodiment, the films 2 by using the adhesive tape 24 connected. However, the slides can 2 also be connected by heat. For example, the film suction mechanism applies 70 instead of the adhesive tape 24 a heat blowing in the width direction at the overlapping portion of the film 2a and the foil 2 B at.

In the embodiment, the film is moved by moving the two movable rollers 26 relative to the three fixed rollers 25 pulled in the direction of arrow H. Alternatively, the film can be moved by moving a movable roller 26 relative to the two fixed rollers 25 be sucked in, as is in 13 is shown.

Nevertheless, if two moving roles 26 relative to three fixed rollers 26 can be moved, as in the present invention, with a small amount of movement of each of the two moving rollers 26 more foil to be pulled in. Therefore, it is more desirable to have a variety of fixed rollers 25 and moving rollers 26 and the variety of moving roles 26 relative to the variety of fixed rollers 25 to move.

Furthermore, as it is in 14 As shown, it is possible to attach a suction mechanism between the two rollers 25 that guide the film to place so that the film can be pulled in when the suction mechanism sucks the film in the direction of an arrow I.

Moreover, the film can 2 holding the three fixed rollers 25 and the two moving rollers 26 happens as it is in 15 (a) shown to be pulled in by the two film rolls 26 be offset in parallel in the direction of an arrow J, as in 15 (b) is shown.

The Embodiments described above concern cases, who use a longitudinal bag packaging device, in which a film is moved vertically while making bags. The Invention can be similar in a baggage bagger be applied, in which the film is moved horizontally while bags made become.

At the device 1000 for manufacturing and packaging a bag of the embodiment, when the film is completely unwound, as in 8th The film can be shown 2 no longer be settled. Therefore, it is necessary to stop the entire device. However, even if the operation of supplying articles from the article supply section to the section 300 stopped for making and packing a bag, were several items 23 (please refer 5 ) at this point already released from the item supply section. If these falling objects 23 can not be packaged, must These items may be collected as unpackaged items.

In view of this, the device uses 1000 for manufacturing and packaging a bag of the embodiment, a method of packaging with a film, which in the in 1 shown dancer role 12 and a method of packaging with a film used in the film storage mechanism 80 the foil joining device 102 is stored so that the falling objects can be packaged even after the article supply section is stopped.

The following is the control of the device 1000 for manufacturing and packaging a bag of the embodiment explains. Then the controller for packing items with the foil 2 who is at the dancer roll 12 at the time of replacing the roll of film 1 is stored, and the controller for packaging objects with the film 2 used in the film storage mechanism 80 at the time of replacing the roll of film 1 is stored, explained in this order.

16 is a block diagram showing the control system of the device 1000 for manufacturing and packaging a bag in accordance with the embodiment. In 16 is the item supply section 700 above the section 300 arranged for making and packing a bag, as is in 1 is shown, and this leads to a predetermined amount of objects 23 ( 5 ) to the section 300 for making and packing a bag too. The item delivery section 700 For example, an automatic balance that weighs a predetermined weight of articles and the predetermined weight of articles to the section 300 for producing and packaging a bag.

As described above, a load cell is 210 with the in 1 shown dancer role 12 via a tension spring 12 coupled. The load cell 210 records the amount of an offset of the dancer roll 12 from the reference position. This offset amount corresponds to the tensile force of the film 2 ,

A control device 500 has elements such as a CPU (central processing unit). The control device 500 controls the rotations of the engine 6 based on the output of the load cell 210 such that the tensile force of the film 2 is constant. The control device 500 also controls the operations of the object feed section 700 , the section for making and packing a bag, the film holding mechanism 60 and the film suction mechanism 70 , as discussed below.

The process of packaging objects by using the film 2 who are in the dancer role 12 at the time of replacing a roll of film 1 is stored, will now be explained.

The 17 and 18 are flowcharts illustrating the operation of the control device 500 show, where the film 2 who are in the dancer role 12 is used to the articles at the time of replacing the film roll 1 to package. 19 shows schematic views of the activities of the dancer role 12 during normal operation and at the time of replacing the roll of film 1 ,

During a normal operation (step S1), the control device controls 500 the speed of the motor 6 based on the output of the load cell 210 as described above, such that the tensile force of the film 2 is constant.

As it is in 19 shown is the dancer role 12 through the tension spring 220 pushed down. During normal operation, as it is in 19 (a) is shown, the dancer roll shifts 12 upwards and downwards, as indicated by the arrow H, according to the tensile force of the film 2 , The output value of the load cell 210 changes accordingly. In this case, because the dancer role 12 from the roll bars 11 in a downward direction, keeps the dancer roll 12 a section of the slide 2 on.

The control device 500 determines if the slide 2 completely out of the roll of film 1 is pulled out or not (step S2). If the slide 2 is completely pulled out exceeds the tensile force of the film 2 the predetermined value. Consequently, the control device determines 500 that the foil 2 is used up when the output value of the load cell 210 exceeds the predetermined value.

As it is in 19 (b) shown when the film 2 is used up, the dancer moves 12 due to an increase in the tensile force of the film 2 upwards over a predetermined position P0 against the urging force of the tension spring 220 , Then the output value of the load cell exceeds 210 the predetermined value.

If the slide 2 is used up, the controller stops 500 the item delivery section 700 and the engine 6 (Step S3). Consequently, the supply of articles from the article supply section stops 700 to the section 300 for making and packing a bag. At this point were already some of the items 23 released into the air.

The control device 500 activates the foli enhaltemechanismus 60 the foil joining device 102 (Step S4). The control device 500 activates the film suction mechanism 70 the foil joining device 102 (Step S5).

At this time, the operation of the section lasts 300 for making and packing a bag. In other words, the longitudinal sealing mechanism is located 18 , the pull-down straps 19 and the transverse sealing mechanism 20 , in the 5 are shown in operation. Consequently, the in the dancer role 12 stored foil 2 to the section 300 for making and packing a bag through the pull-down straps 19 promoted.

As it is in 19 (c) is shown when the dancer roll 12 against the urging force of the tension spring 220 upwards over the position between the roller bars 11 moved out, the film becomes 2 who is at the dancer roll 12 is kept to the section 300 for making and packing a bag. Consequently, the items supplied from the item supply section 700 objects released into the air 23 at the section 300 packaged for making and packing a bag.

The control device 500 determines whether each of the items that have fallen is packaged (step S6). The number of falling objects is determined by the speed of operation and the distance between the article feed section 700 and the transverse sealing mechanism 20 certainly. For example, when the operating speed is 200 times per minute, items corresponding to contents of two bags fall. The length of the film to be used varies depending on the size of the bags. In the embodiment described above, the dancer roll is 12 preconfigured so that the dancer roll 12 stored foil 2 is sufficient. In this case, the control device counts 500 each release of items from the item supply section 700 ,

The counter is decremented when the packing of the items is completed. The packaging operation is maintained until the counter of dispensed objects becomes zero. Once the counter reaches zero, it is determined that all the items that fell are packaged. Consequently, the operation of the section 300 for making and packing a bag stopped (S7).

On the other hand, at the end of step S5, the operator can change the film roll 1 in the 7 - 11 Shown by performing the foil joining device 102 used. Once the joining of the film 2 , in the 10 is finished, the operator notifies the control device 500 in that joining the foil 2 has been terminated by using devices such as an actuation switch (not shown in the figures).

Once the control device 500 acknowledges that joining the foil 2 has been ended (step S8), deactivates the control device 500 the film holding mechanism 60 the foil joining device 102 (Step S9). The control device 500 also disables the slide suction mechanism 70 the foil joining device 102 (S10). Consequently, the operation can now be resumed by replacing the replacement roll 1 is used.

The operator sends a command to the control device by using the operation switch (not shown in the figures) 500 to resume operation. The control device 500 determines whether the operation can be performed (step S11). If the operation can be performed, the control returns to step S1 to perform a normal operation.

In this way, the objects can 23 that fell off, as the end of the slide 2 was detected by using the film 2 be packaged with the dancer roll 12 is kept.

Next, an operation of each section at the time when objects dropped by using the film will be explained 2 in the film storage mechanism 80 of the film-feeding mechanism 102 is kept.

The 20 and 21 are flowcharts illustrating the operation of the control device 500 show at the time when objects have fallen by using the foil 2 in the film storage mechanism 80 of the film-feeding mechanism 102 is kept. The 22 - 26 Fig. 3 are schematic cross-sectional views illustrating the operation of the film storage mechanism 80 the foil joining device 102 during normal operation and at the time show when the roll of film 1 is exchanged. Also in the 22 - 26 becomes the film of the film roll 1 before an exchange as 2a characterized while the film of the film roll 1 after an exchange as 2 B referred to as.

In this example, as in 22 is shown is the film holding mechanism 60 at the position of the upstream side fixed roller 25 appropriate. The load cell 210 is about the mainspring 220 with the moving frame 28 the film storage mechanism 80 coupled. The load cell 210 captures the amount of an offset of the movable frames 28 from the reference positions. This amount corresponds to an offset the tensile force of the film 2 , The control device 500 from 16 controls the rotations of the engine 6 based on the output from the load cell 210 such that the tensile force of the film 2a is constant.

In this embodiment, the film storage mechanism works 80 also as the dancer role. Consequently, the in 1 shown dancer role not required. Also, in this embodiment, the film roll 1 supported so that the roll core 31 extends in the horizontal direction. Also, the foil joining device 102 installed so that the attached rollers 25 , the moving wheels 26 , the rotation axis 29 and the leadership 30 extend in horizontal directions. As a result, the movable frame rotates 28 up and down around the axis of rotation 29 , In this case, the first leadership role 7 , the second leading role 8th , the turning bar 9 and the turner bar up-down mechanism 10 , in the 4 shown are not required.

During normal operation (S21), the control device controls 500 the rotations of the engine 6 based on the output from the load cell 210 such that the tensile force of the film 2a is constant.

As it is in 22 is shown while the operation is stopped is the movable frame 28 due to its own weight and the urging force of the tension spring 220 positioned down at the lowest end. During normal operation, as it is in 22 is shown, the movable frame rotates 28 up and down, as shown by arrow h, due to the tensile force of the film 2a , The output from the load cell 210 changes accordingly. In this case, because the moving rollers 26 from the mounted rollers 25 in a downward direction, the film storage mechanism keeps 80 a part of the film 2a on.

The control device 500 determined based on the output from the load cell 210 whether the slide 2a from the roll of film 1 has been pulled out or not (step S22). If the slide 2a is used up, exceeds the tensile force of the film 2a the predetermined value. Therefore, the control device determines 500 that the foil 2a is used up when the output from the load cell 210 exceeds the predetermined value.

23 shows the state where the output from the load cell 210 exceeds the predetermined value.

Once the slide 2a is used up, the controller stops 500 the item delivery section 700 and the engine 6 (Step S23). Consequently, the supply of articles stops from the article supply section 700 to the section 300 for making and packing a bag. However, at this point, a pair of items became 23 already from the item supply section 700 released and fall now.

Next, the controller activates 500 the film holding mechanism 60 the foil joining device 102 (Step S24).

At this time is the operation of the section 300 not stopped for making and packing a bag. The longitudinal sealing mechanism 18 , the pull-down straps 19 and the transverse sealing mechanism 20 , in the 5 are shown, are in operation. The in the foil storage mechanism 80 stored foil 2 is by means of the pull-down straps 19 to the section 300 for making and packing a bag.

At this point, as it is in 24 shown is because of the movable frame 28 with the movable roller 26 upwards around the axis of rotation 29 against the urging force of the tension spring 220 moves, the in the film storage mechanism 80 stored foil 2a to the section 300 for producing and packaging a bag, as shown by the arrow z. The section 300 For making and packing a bag, the falling objects are packed 23 by using this foil.

The control device 500 determines whether or not all the items that have fallen off are packaged by reducing the counter of the clearances of the items as described above (step S25).

Once all items are dropped that have fallen down, the controller stops 500 the operation of the section 300 for making and packing a bag (step S26). Then the control device activates 500 the film suction mechanism 70 the foil joining device 102 (Step S27). The operator cuts the film 2a at the end position shown by the arrow D and separates the film 2a from the roll core 31 ,

The control device 500 deactivates the foil retaining mechanism 60 the foil joining device 102 (Step S28). Consequently, as it is in 25 is shown, the moving rollers rotate 26 and the movable frame 28 due to their own weights and the urging force of the tension spring 220 downwards around the axis of rotation 29 as shown by the arrow F. Consequently, the moving rollers become 26 from the mounted rollers 25 separated in the downward direction. The foil 2a on the upstream side of the film joining device 102 becomes the film joining device 102 pulled out to open in the film preservation mechanism 80 to be kept. As a result, the end of the separated film 2a to the film suction mechanism 70 led out.

As it is in 26 shown after a new roll of film 1 is installed on the support shaft, the operator pulls the beginning piece of the film 2 B the new film roll 1 up to the slide suction mechanism 70 , The beginning piece of the film 2 B will be at the back end of the slide 2a attached to the foil suction mechanism 70 is sucked. Then the back end of the film 2a and the front end of the film 2 B connected.

Once the joining of the film 2 is completed, the operator notifies the controller 500 that joining the slides 2a and 2 B is finished by using the operation switch (not shown in the figures).

Once the control device 500 confirmed that joining the foil 2 is finished (step S29), deactivates the control device 500 the film suction mechanism 70 the foil joining device 102 (Step S30). Consequently, the operation with the replacement film roll 1 be resumed.

The operator using the operation switch (not shown in the figures) sends a command to the control device 500 to start the operation. The control device 500 determines whether the operation can be performed (step S31). If the operation can be performed, the control returns to step S21 to perform a normal operation.

In this way, the objects can 23 that fell off, as the end of the slide 2 was detected by using the film 2 in the film storage mechanism 80 is kept.

In this embodiment, the support shaft corresponds 3 the film roll supporting portion corresponds to the film conveying portion 200 the film conveying mechanism and corresponds to the film joining device 102 the foil joining device. The foil storage mechanism 80 and the dancer role 12 correspond to the foil storage mechanism. Furthermore, the film suction mechanism corresponds 70 the film base holding mechanism. The film holding mechanism 60 corresponds to the foil retaining mechanism. The motor 6 corresponds to the drive device. The load cell 210 corresponds to the detection device and tension detection device. The control device 500 corresponds to the control section.

Since this embodiment has a mechanism that the moving rollers 26 so maintains that the moving rollers 26 from the mounted rollers 25 project upwards when passing the film through each of the rollers 25 and 26 is inserted, it is not necessary, the film between the rollers 26 and the roles 25 introduce. Therefore, the embodiment has merit in that it has better operability.

Claims (11)

Device ( 1000 ) for manufacturing and packaging a bag which packages articles while making a bag from a roll of film in which a long film is wound in a roll form, the bag-making and packaging apparatus comprising: a section ( 300 ) for making and packing a bag; an article feeding section for feeding the articles to the sections (FIG. 300 ) for making and packing a bag; a film roll support section ( 101 ) for supporting the film roll; a drive device ( 6 ) for sending the film from the film roll passing through the film roll supporting section ( 101 ) is supported; a film conveying mechanism ( 200 ) for conveying the film, which from the film roll to the section ( 300 ) is sent to produce and pack a bag; a film storage mechanism ( 80 ) for posting a film while storing the film which is conveyed by the film conveying mechanism ( 200 ) should be transported; and a detection device ( 210 ) for detecting that the film of the film roll has been used up; characterized by a control section ( 500 ) adapted to perform activities of the article feeding section and the driving device ( 6 ) in response to an output from the detection device ( 210 ) and to operate the section ( 300 ) for making and packaging a bag after being stored in the film storage mechanism ( 80 ) is sent in an amount corresponding to a predetermined number of bags. Device ( 1000 ) for manufacturing and packaging a bag according to claim 1, wherein the detection device ( 210 ) has a tension detecting device that detects a pulling force of the film, and the control section (FIG. 500 ) the operation of the article supply section and the drive device ( 6 ) when the output from the tension detecting device ( 210 ) exceeds a predetermined value. Device for manufacturing and packaging a Bag according to claim 2, wherein the control section ( 500 ) the drive device ( 6 ) controls so that the tensile force of the film is constant when the output from the tension detecting device (FIG. 210 ) is less than the predetermined value. Apparatus for manufacturing and packaging a bag according to claim 1, wherein said film storing mechanism (10) 80 ) a fixed roll ( 25 ) for guiding the conveyed film, a movable roll ( 26 ) for changing a traveling distance of the conveyed film, and a moving mechanism that moves the movable roller toward and away from the fixed reel. A bag manufacturing and packaging apparatus according to claim 1, further comprising: a film joining apparatus ( 70 ) between the film roll support section ( 101 ) and the film conveying mechanism ( 200 ), wherein the film joining apparatus inserts one end of the film on the film conveying mechanism side and a replaced film film head at the time of replacing the film roll, the film storing mechanism 80 ) on a downstream side of a film-laying position of the film joining apparatus ( 70 ) is arranged. Apparatus for manufacturing and packaging a bag according to claim 5, wherein the film storage mechanism ( 80 ) a fixed roll ( 25 ) for guiding the conveyed film, a movable roll ( 26 ) for changing a traveling distance of the conveyed film, and a moving mechanism which moves the movable roller in the vicinity of and away from the fixed roller. Apparatus for manufacturing and packaging a bag according to claim 6, wherein said moving mechanism comprises a fixed frame (Fig. 27 ) for supporting both ends of the attached roller ( 25 ), a movable frame ( 28 ) for supporting both ends of the movable roller ( 26 ), and an axis of rotation parallel to the mounted roller ( 25 ) is supported around one end of the movable frame ( 28 ) such that the movable frame ( 28 ) around the fixed frame ( 27 ) is rotatable, and wherein the movable roller ( 26 ) relative to the attached roller ( 25 ) by allowing the movable frame to rotate about the axis of rotation relative to the fixed frame. Apparatus for manufacturing and packaging a bag according to claim 6, wherein the film joining device ( 70 ) further comprises a film base holding mechanism, which in the film conveying direction on the upstream side of the film storage mechanism ( 80 ), wherein the film base holding mechanism holds by suction the film which is separated from the exchanged film roll at the time of film-joining. A bag manufacturing and packaging apparatus according to claim 8, wherein said control section (14) 500 ) the film base holding mechanism ( 70 ) during slide joining. Apparatus for manufacturing and packaging a bag according to claim 5, wherein the film joining device ( 70 ) further comprises a sheet holding mechanism which, in the sheet conveying direction, is located on a downstream side of the sheet storage mechanism (Fig. 80 ), wherein the film retaining mechanism ( 60 ) for holding a film on the film conveying mechanism side at the time of joining the films. Apparatus for manufacturing and packaging a bag according to claim 10, wherein the control section ( 500 ) the film retaining mechanism ( 60 ) in response to an output of the detection device ( 210 ) is activated.